更新到Kubuntu 20.04后,英特尔AX200 Wifi无法正常工作

我最近从Kubuntu 19.10更新到Kubuntu 20.04,现在我的wifi无法正常工作。它似乎偶尔会起作用,但出于所有意图和目的,它都不会起作用。

The first thing I noticed, by running dmesg |grep iwlwifi was that it appeared to be attempting to load iwlwifi-cc-a0-50.ucode followed by iwlwifi-cc-a0-49.ucode both of which do not exist on my system and then finally it would load iwlwifi-cc-a0-48.ucode.

However, looking at https://www.intel.com/content/www/us/en/support/articles/000005511/network-and-i-o/wireless-networking.html would seem to suggest that the correct driver for my device is iwlwifi-cc-a0-46.ucode. Therefore, I downloaded this from the git tree and forced my kernel to load it by overwriting iwlwifi-cc-a0-48.ucode in /lib/firmware.

I thought this would fix the problem, but it has not and I am not sure what to do at this point. Here is the current output of dmesg |grep iwlwifi. Any help would be greatly appreciated.

jasonb@jason-pc:~$ dmesg |grep iwlwifi
[    3.040001] iwlwifi 0000:02:00.0: enabling device (0000 -> 0002)
[    3.063694] iwlwifi 0000:02:00.0: Found debug destination: EXTERNAL_DRAM
[    3.063696] iwlwifi 0000:02:00.0: Found debug configuration: 0
[    3.063885] iwlwifi 0000:02:00.0: loaded firmware version 46.177b3e46.0 op_mode iwlmvm
[    3.112782] iwlwifi 0000:02:00.0: Detected Intel(R) Wi-Fi 6 AX200 160MHz, REV=0x340
[    3.125898] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[    3.126315] iwlwifi 0000:02:00.0: Allocated 0x00400000 bytes for firmware monitor.
[    3.283955] iwlwifi 0000:02:00.0: base HW address: 50:eb:71:da:33:6a
[    3.301432] iwlwifi 0000:02:00.0 wlp2s0: renamed from wlan0
[    4.360449] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[    4.518769] iwlwifi 0000:02:00.0: FW already configured (0) - re-configuring
[    4.530986] iwlwifi 0000:02:00.0: BIOS contains WGDS but no WRDS
[   12.240895] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   13.704339] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   14.728587] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   19.720571] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   20.776456] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   23.720531] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   24.776483] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   27.464338] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   28.744363] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   29.800544] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   39.024188] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   39.688581] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   40.776720] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   52.716839] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   53.800487] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   54.760647] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   65.612484] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   66.728634] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   67.688562] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   79.679563] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   80.680600] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   81.800606] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   91.590532] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   92.808675] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
[   93.800381] iwlwifi 0000:02:00.0: No beacon heard and the time event is over already...
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